In some cultures men prove their manhood by enduring pain. Get a pass into an American Fight Club, where some successful, educated males engage in physical combat to test their manhood, using anything to attack - wooden knives, soda cans, sticks, even soap-on-a-rope. On the remote Indonesian island of Sumba, hundreds of men take part in a time-honored event known as the Pasola. Facing off in two teams on horseback, they charge toward each other hurling spears.